Engine Flush - GM Technical Service Bulletin - Car TalkJust today I got snookered (I found out later -- I feel so dumb) into getting an Engine Flush on my 2002 Silverado. Good history of oil changes.http://community.cartalk.com/discussion/2284306/engine-flush-gm-technical-service-bulletin

GM UPFITTER - Technical BulletinsTechnical Bulletins provide up-to-date information on issues that come up during the model year. These issues require a more immediate distribution of technical ...http://www.gmupfitter.com/pages/technical-bulletins